Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already declare read-only, idempotent, closed-world, and non-destructive behavior. The description adds useful behavioral context: it enumerates the categories of changes tracked and states the 30-day daily window, which is not captured by the annotations or schema.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

Two compact sentences front-load the change categories and follow with the optional names filter. There is no wasted text.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the annotations and input schema, the description is mostly complete: it explains what changes are returned and the 30-day window. It could do slightly more to clarify default scope when names is omitted or how results are grouped, but no output schema exists to cover those details.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 50%. The description adds meaning to the optional names parameter by explaining it as watching specific servers, but it does not clarify the since parameter beyond what is already in the schema. It partially compensates for the coverage gap.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the resource and scope: registry changes including tool add/remove, schema changes, new destructive tools, server status, and listings over the last 30 days. It is specific and not tautological, but it does not distinguish this from sibling tools like get_server_history.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

It implies the tool is for monitoring changes and notes that names can watch specific servers, but gives no explicit when-to-use guidance, no when-not conditions, and no comparison to sibling tools such as get_server_history or search_servers.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.